"We have seen no material impact on our business resulting from the heightened public attention on this issue in the past several weeks."

Analysis

By Michelle FleuryBBC business correspondent, Washington, DC

The outcome is considered a victory for the US Justice Department which has been trying to clamp down for some time now on banks that have aided rich Americans in evading paying taxes here in the US.

UBS had been fined in the past but nowhere near as much as Credit Suisse.

Questions have been asked, ever since the end of the financial crisis, about why banks have not faced harsher penalties as a result of the calamity and catastrophe that many feel they were responsible for.

Earlier in May , perhaps as an indication of the thinking of US authorities, US attorney general Eric Holder said there's no such thing as a bank that's too big to jail.

'Elaborate lengths'

Mr Holder told a press conference: "The bank went to elaborate lengths to shield itself, its employees, and the tax cheats it served, from accountability for their criminal actions."

Credit Suisse is not alone. US prosecutors are chasing more than a dozen other Swiss banks for allegedly helping wealthy Americans dodge US taxes, and at the press conference, they hinted that there would be more settlements to come.

In 2009, another Swiss bank, UBS, settled similar charges with US regulators for $780m as well as an agreement in which the bank would give US authorities the names of its so-called "secret" account holders.